Pågående forskningsprojekt

Cooperating research Groups:

Luleå University, Sweden - Senior researcher Pär Weihed, par.weihed@ltu.se
PhD Glenn Bark, glenn.bark@ltu.se Stockholm University, Sweden
Senior researcher Curt Broman, curt.broman@geo.su.se

Cooperating industry: Lappland Goldminers

Deposits to study:

• Fäboliden, Lappland GoldMiners & work commenced

• Stortjärnhobben, Knaften, Lappland GoldMiners & work commenced

• Svartliden, Dragon Mining & work discussed

• To improve the geological knowledge of the gold-deposits in the Lycksele-Storuman area. This will be achieved by outcrop and drillcore logging.

• To understand the timing of mineralization, fluid source and precipitation mechanisms. This part is essential since new data indicate that the host sequence to mineralization may be substantially older than previously thought.

• To establish genetic models for the deposits, emphasising structural control, hydrothermal alteration and characterisation of the mineralizing fluids. This would help to identify differences between mineralized and barren systems and to constrain the favourable environment for localization of similar mineralizations

• Detailed deposit scale geological maps and cross sections (scale 1:1 000)

• Structural models for the deposits

• Constraints on the fluid flow, composition, evolution, and source and precipitation mechanisms

• Define the hydrothermal alteration associated with mineralization, incl. possible spatial and temporal zoning of the hydrothermal system

• Genetic models and exploration criteria for the deposit types in the area

• Understanding of the tectonic setting of the deposits

• Outcrop and drill core logging (Deposit scale maps and profiles will be constructed in the c. 1:1000 scale)

• Structural mapping and interpretation of regional and detailed data (incl. aeromagnetics and ground geophysical data)

• Geochemical studies of the alterations system and the host rocks.

• Fluid inclusion and possible stable isotope (O, H, S) studies on the mineralizing system

• Radiogenic isotope studies of host rocks and mineralization for age constraints (U-Pb, Pb-Pb, Re-Os, Ar-Ar, Sm-Nd(?)).

Short- and long-term use of expected results

• Characterization of orogenic Au or Au lode deposits in the new ore province

• Understanding of timing, structural setting and origin of ore fluids

• Evaluation of critical parameters for the formations of Au deposits in the area

• leads to exploration....

• Exploration guidelines for Au deposits in the Lycksele-Storuman ore province